adj. 使 ... 清洁的(近晶的)
The trifluoromethoxy end-group favors for the formation of smectic phase. 三氟甲氧基有利于近晶相。
Distinctions are noted such as appearance of 2-brush defects and two types of domains in the tilted smectic phases. 受配向而呈现均匀排列的纹理图中，双折射随著电场强度变化，显示因电场驱动而分子极化方向随之改变。
The structure of the as-spun filament ought to have the smectic crystal form, lower crystallinity andmoderate orientation. 加弹变形温度和产生紧点的临界温度均低于普通丙纶。
All target compounds exhibitwide smectic A phase and compounds bearing short terminal tail chains exhibit narrow nematic phase. 发现目标化合物都呈现很宽的近晶A相,当另一侧的碳氢链较短时,还有较窄的向列相存在。
DSC analyses show that these compounds have a broad nematic range and the substitute of lateral fluorine can suppress the smectic phase effectively,thus broaden the nematic phase. DSC分析表明产物具有较宽的液晶相区,引入侧向氟原子可以有效地抑制近晶相,从而扩大向列相温区。
